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Dissertations / Theses on the topic 'Polyester copolymer'

Author: Grafiati

Published: 4 June 2021

Last updated: 13 February 2022

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1

Mecham, Jeffrey Brent. "Synthesis and Characterization of Cycloaliphatic and Aromatic Polyester/Poly(dimethylsiloxane) Segmented Copolymers." Thesis, Virginia Tech, 1997. http://hdl.handle.net/10919/31382.

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Linear thermoplastic polyesters are commonly used in high volume applications such as food containers, films and textile fibers. The physical and mechanical properties of these materials are well documented and are a function of chemical structure and morphology (e.g. semi-crystalline, amorphous, etc.). Polyesters, as are many organic polymers, are quite flammable. Polydimethylsiloxane homopolymer exhibits low mechanical strength and, even at high molecular weight, exists as a viscous fluid rubbery gum due to its low glass transition temperature of approximately -123Â°C. However, one of th

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2

Montenegro-Galindo, Gladys Rocio. "Synthesis and Protein Adsorption Studies of Pegylated-Polyester Nanoparticles with Different Peg Architectures." University of Akron / OhioLINK, 2013. http://rave.ohiolink.edu/etdc/view?acc_num=akron1384629996.

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3

Jacquel, Nicolas. "Synthesis and properties of polyesters based on poly(butylene succinate), a renewable polymer." Thesis, Lyon, INSA, 2011. http://www.theses.fr/2011ISAL0127.

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Les polymères issus de la biomasse génèrent depuis quelques années un engouement certain puisqu’ils apparaissent comme de potentiels substituts aux polymères issus de l’industrie pétrolière. Parmi ces monomères récemment développés, l’acide succinique bio-sourcé a reçu une attention particulière notamment pour des applications dans le domaine des polyesters tels que le poly(butylène succinate). La présente thèse décrit la synthèse de ce polymère par estérification directe de l’acide succinique et du 1,4-butanediol dans un réacteur pilote de 7.5 L. Les principaux paramètres du procédé tels que

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4

Lemechko, Pierre. "Élaboration de nouveaux biopolyesters bactériens fonctionnalisés pour des applications dans le domaine biomédical." Thesis, Paris Est, 2012. http://www.theses.fr/2012PEST1143/document.

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Les poly(3-hydroxyalcanoate)s ou PHAs sont des biopolyesters linéaires biodégradables et biocompatibles synthétisés par des microorganismes bactériens en tant que réserve de carbone et d'énergie. Ils sont synthétisés par des bactéries à partir de ressources renouvelables et la diversité de leurs structures possibles se traduit par un large éventail de polymères ayant des propriétés mécaniques très différentes. Nous avons tout d'abord testé les capacités de production de PHAs de nouvelles souches bactériennes marines provenant de tapis microbiens de Polynésie française, en utilisant, entre autr

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5

Ma, Hongming. "Structure-property relationships in copolyester fibers and composite fibers." Diss., Available online, Georgia Institute of Technology, 2004:, 2004. http://etd.gatech.edu/theses/available/etd-04112004-150623/unrestricted/Ma%5FHongming%5F200405%5Fphd.pdf.

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Thesis (Ph. D.)--Chemistry and Biochemistry, Georgia Institute of Technology, 2004.<br>Collard, David, Committee Co-Chair ; Schiraldi, David, Committee Member ; Liotta, Charles, Committee Member ; Weck, Marcus, Committee Member ; Srinivasarao, Mohan, Committee Member ; Kumar, Satish, Committee Co-Chair. Vita. Includes bibliographical references.

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6

Karsten, Irene Frances. "The light stability of silk adhered to sheer silk and polyester backing fabrics with poly(vinyl acetate) copolymer adhesives." Thesis, National Library of Canada = Bibliothèque nationale du Canada, 1998. http://www.collectionscanada.ca/obj/s4/f2/dsk2/tape15/PQDD_0003/MQ34382.pdf.

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7

Ghorbel, Inès. "Elaboration, caractérisation et mise en œuvre de matériaux polymères à base de polysemicarbazides et polyester furanique bio-sourcés." Thesis, Lyon, INSA, 2013. http://www.theses.fr/2013ISAL0013.

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Ce travail est développé dans le but d’élaborer, caractériser et mettre en œuvre de matériaux polymères à base de polysemicarbazides et polyesters furaniques bio-sourcés. L’étude comporte trois grandes parties : la synthèse et l’optimisation du procédé de synthèse de poly(acylsemicarbazide)s, la préparation de quelques mélanges de polymères en mini-bivis de polymères furaniques (PEF ou PSC) avec le PET, le PLA et le PHA et l’élaboration de nouveaux copolyesters furano-aliphatiques par polymérisation par ouverture de cycle (PEF/PCL) ou par réactions d’interéchanges à l’état fondu de mélange d’h

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8

Freyermouth, Floriane. "Etude et modification des propriétés du poly(butylène succinate), un polyester biosourcé et biodégradable." Thesis, Lyon, INSA, 2014. http://www.theses.fr/2014ISAL0009/document.

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Dans le contexte de développement durable actuel, les matériaux biosourcés et biodégradables commencent à prendre une place importante d’un point de vue économique et écologique. L’objectif de remplacer les polyoléfines utilisées actuellement dans des domaines clés tels que l’emballage et l’automobile est cependant difficile car les matériaux « verts » sont rarement aussi performants. Ils présentent en général des lacunes au niveau de leurs propriétés mécaniques et sont sensibles à des dégradations qui limitent leur durée de vie. Le poly(butylène succinate) est un polyester connu depuis longte

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9

Lamy, Yoann. "Nanostructuration de résines polyester insaturé par des copolymères à blocs : application aux composites SMC et BMC." Phd thesis, INSA de Lyon, 2012. http://tel.archives-ouvertes.fr/tel-00812588.

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On s'intéresse dans cette étude au potentiel de copolymères à blocs (BCP) de types PBA-b-P(MMA-co-DMA) et PBA-b-P(BA-co-DMA) en tant qu'additifs multifonctionnels nanostructurant la matrice thermodurcissable polyester insaturé de composites SMC et BMC. La nanostructuration de la résine polyester insaturé (UPR) est assurée par la ségrégation du bloc élastomère poly(acrylate de butyle), ainsi que par la miscibilité du deuxième bloc dans le réseau grâce à la bonne compatibilité des motifs diméthylacrylamide (auto-assemblage). Ces BCP sont tout d'abord étudiés en tant qu'agents renforçants et anti

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10

Kruppke, Iris, Rolf-Dieter Hund, and Chokri Cherif. "Adhesion problematics and curing kinetics in a thermosetting matrix for stitch-free non-crimp fabric." Sage, 2016. https://tud.qucosa.de/id/qucosa%3A35420.

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Non-crimp fabrics (NCF) have become established in the fields of the automotive, aircraft, and wind power industries, which has led to an increasing demand of fiber plastic composites. In order to utilize the known excellent load-bearing properties of NCF and also to reduce the related disadvantages such as fiber undulation caused by stitching yarn, inclusions of resin and filament breakage by the stitch-bonding process have to be addressed. Hence, an alternative manufacturing technology is presented. This technology is defined by the punctiform application of a polyester hot melt adhesive to

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11

Duaux, Gabriel. "Polymères biosourcés issus de LTTM {glucide polyacide carboxylique eau} : Élaboration et applications dans les matériaux carbonés réfractaires." Thesis, Lyon, 2020. http://www.theses.fr/2020LYSEI119.

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Les matériaux composites carbone/carbone réfractaires sont constitués de charges granulaires carbonées mises en forme à l’aide d’un liant carbonisable. Jusqu’à présent, le liant utilisé est généralement le brai de goudron houille, cancérigène et visé par REACH. Afin de le substituer par un produit plus respectueux de l’environnement et de la santé des manutentionnaires, nous proposons une solution innovante dans ces travaux de thèse. Les glucides, et plus particulièrement les sucres, sont des composés carbonisables possédant un rendement en carbone faible. En présence de polyacide carboxylique

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12

Kiefer, Laura A. "Synthesis and characterizaton of novel polyester/polysiloxane and polyester/arylphosphine oxide copolymers." Diss., This resource online, 1993. http://scholar.lib.vt.edu/theses/available/etd-07122007-103944/.

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13

Leroux, Flavien. "Elaboration de copolymères greffés à squelette poly(1,4-butadiène) et à greffons polaires par combinaison ROMP/ROP." Thesis, Le Mans, 2014. http://www.theses.fr/2014LEMA1026/document.

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Le sujet de cette thèse concerne l’élaboration de copolymères greffés possédant un squelette poly(1,4-butadiène) et une haute densité de greffons polaires. La synthèse de copolymères à squelette strictement poly(1,4-butadiène) et possédant une haute densité de greffons selon un enchaînement strictement tête-à-tête a été réalisée par polymérisation par ouverture de cycle par métathèse (ROMP) de monomères cyclobutène 3,4-disubstitués. Le choix des greffons polaires s’est porté sur des poly(Ɛ-caprolactone)s (PCL) et des poly(L-lactide)s (PLLA) obtenus par polymérisation par ouverture de cycle (RO

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14

Abduallah, Abduelmaged Basher Elmabrok. "Synthesis and morphological characterization of segmented and branched polydimethylsiloxane-polyester copolymers." Thesis, Stellenbosch : University of Stellenbosch, 2010. http://hdl.handle.net/10019.1/4021.

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Thesis (PhD (Chemistry and Polymer Science))--University of Stellenbosch, 2010.<br>ENGLISH ABSTRACT: Polydimethylsiloxane–polyester (PDMS-PES) copolymers produce materials which have enhanced properties and take advantage of the unique properties of the two very dissimilar components. The dissimilar nature of the components results in these types of materials typically having complex morphologies in the solid state as a result of phase segregation. When the polyester component is crystallisable, an even richer variation in morphology can be expected. The chain structure of the copolymer

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15

He, Zhi-qun. "Structural modification in rigid and semi-flexible polymers." Thesis, University of Reading, 1993. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.240319.

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16

Kriegel, Robert Michael. "Anthracene containing polyesters : Homopolymers, copolymers and chain extension via Diels-Alder reactions." Diss., Georgia Institute of Technology, 2001. http://hdl.handle.net/1853/27265.

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17

El, jundi Ayman. "DEGRADABLE DOUBLE HYDROPHILIC BLOCK COPOLYMERS FOR HEALTH APPLICATIONS." Thesis, Montpellier, 2019. http://www.theses.fr/2019MONTS141.

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Les copolymères amphiphiles dégradables à base de poly (éthylène glycol) PEG et de polyesters aliphatiques (poly(ε-caprolactone) (PCL), poly(lactide) (PLA), poly(glycolide) (PGA)) sont largement utilisés dans les applications médicales en raison de leur innocuité et leur acceptation par les autorités de santé. Cependant leur capacité à répondre aux enjeux auxquels sont confrontés les nanomédicaments (ciblage, réponse programmée etc…) est limitée du fait de l’absence de groupes fonctionnels. Pour pallier cette limitation, ce travail de thèse s’intéresse aux voies de modification post-polymérisa

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18

Chang, Zhengmian. "Synthesis and Properties of Novel Triptycene-containing Segmented Polyurethanes and Semicrystalline Polysulfone-polyester Multiblock Copolymers." Diss., Virginia Tech, 2015. http://hdl.handle.net/10919/73294.

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Segmented copolymers are important polymers with attractive properties and wide applications. In this dissertation, segmented polyurethanes containing triptycene units and multiblock copolymers containing poly(arylene ether sulfone) (PAES) and poly(1,4-cyclohexyldimethylene terephthalate) (PCT) segments were synthesized and systematically studied. Investigation of the influence of the bulky triptycene structure on the morphologies and properties of segmented polyurethanes was carried out by using triptycene-1,4-hydroquinone bis(2-hydroxyethyl)ether (TD) as the chain extender. Segmented polyur

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19

Cairns, Stefan Alexander. "Ring-opening polymerisation of 1,3-Dioxolan-4-ones." Thesis, University of Edinburgh, 2018. http://hdl.handle.net/1842/31502.

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Polyesters have been realised as a viable replacement for slow or non-degrading petroleum derived polymers. A variety of aliphatic polyesters, e.g. poly(lactic acid), have received a lot of attention because they are produced from renewable feedstocks and have the ability to biodegrade and bioassimilate. Poly(lactic acid)'s broader family, poly(α-hydroxy acid)s, have been produced with a wide variety of properties, that has given polyesters the potential for a more diverse range of applications. However, their synthesis has proven difficult. This thesis investigates a family of 1,3-dioxolan-4-

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20

Vargas, Marian. "Design of New Polyester Architectures through Copolymerization, Crosslinking, and Diels-Alder Grafting." Diss., Georgia Institute of Technology, 2004. http://hdl.handle.net/1853/5194.

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The compound 2,6-anthracenedicarboxylic acid is used as a comonomer for the synthesis of poly(ethylene terephthalate). The resulting copolymers are characterized and further functionalized by Diels-Alder grafting or crosslinking through the anthracenate unit. Diels-Alder reaction is used to graft small molecules and oligomers endcapped with maleimide as dienophiles on to poly(ethylene terephthalate-co-2,6-anthracenedicarboxylate),PET-co-A. Maleimide-capped poly(ethylene glycol) is grafted onto PET-co-A to improved its hydrophilicity. 2,6-Anthracenedicarboxylic acid is also incorporated i

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21

Breitenkamp, Rebecca Boudreaux. "Oligopeptide-functionalized Graft Copolymers: Synthesis and Applications in Nucleic Acid Delivery." Amherst, Mass. : University of Massachusetts Amherst, 2009. http://scholarworks.umass.edu/open_access_dissertations/5/.

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22

Dennis, Joseph M. "High Performance Engineering Polymers: Design, Properties, and Performance." Diss., Virginia Tech, 2017. http://hdl.handle.net/10919/80034.

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The facile synthesis of engineering thermoplastics enabled the development of structure-morphology-property relationships for a wide range of applications. Utilizing step-growth polymerization techniques, a myriad of reaction conditions probed various polymer families including polysulfones, polyesters, polyimides and polyureas. Copolymers ranging from random to segmented sequences provided insight into the influence of segment length on physical properties. Melting temperatures, glass transition temperatures, and mechanical properties responded systematically to segment length and morphology.

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23

Valverde, Sarmiento Carmen. "10-Undecenoic acid-based biodegradable hydroxy polyesters: a platform for aminoacid bioconjugates and PEG-derived amphiphilic copolymers." Doctoral thesis, Universitat Rovira i Virgili, 2018. http://hdl.handle.net/10803/664715.

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El gran desenvolupament que actualment estan experimentant els biopolímers es deu fonamentalment als alts preus i a la disminució de les reserves de petroli, juntament amb la preocupació que existeix avui en dia en matèria de sostenibilitat ambiental. Entre els polímers d'origen renovable, els polièsters alifàtics són dels més estudiats ja que es consideren molt adequats per aplicacions com a biomaterials a causa de la seva biocompatibilitat i biodegradabilitat. En aquesta tesi s'han preparat polièsters renovables mitjançant química sostenible i utilitzant derivats de l'oli de ricí, com a p

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24

Waehamad, Wae-asae. "Synthesis and characterization of polyether-ester liquid crystalline polyesters and poly(arylene ether ketone)-lcp segmented copolymers." Diss., Virginia Tech, 1991. http://hdl.handle.net/10919/38781.

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25

Boháčová, Zdeňka. "Polymerace za otevření kruhu laktonů a laktidů." Doctoral thesis, Vysoké učení technické v Brně. Fakulta chemická, 2015. http://www.nusl.cz/ntk/nusl-233379.

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Medicínské aplikace tvoří z biodegradabilních alifatických polyesterů na bázi polylaktonů, polylaktidů a jejich kopolymerů velmi atraktivní skupinu materiálů. Metody přípravy těchto polymerů jsou založeny na polymeraci za otevření kruhu laktonů a laktidů. Mnoho organokovových sloučenin se vyznačují jako účinné a vysoce selektivní katalyzátory těchto polymerací, avšak je známo, že deriváty těžkých kovů jsou škodlivé pro lidský organismus. Z tohoto důvodu je v dnešní době rostoucí zájem o vývoj účinných „green“ polymeračních systémů pro syntézu biodegradabilních alifatických polyesterů. Předlože

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26

Babinot, Julien. "Élaboration de copolymères amphiphiles à base de poly (3-hydroxyalcanoate)s." Phd thesis, Université Paris-Est, 2012. http://tel.archives-ouvertes.fr/tel-00804248.

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Les poly (3-hydroxyalcanoates) (PHAs) sont des polyesters aliphatiques produits et accumulés par des bactéries en tant que réserve de carbone et d'énergie. Ils sont constitués d'unités β-hydroxyesters et possèdent des chaînes latérales de longueur variable, pouvant être fonctionnalisées. Ils possèdent des propriétés de biodégradabilité et de biocompatibilité; ceci leur confère de vastes possibilités d'utilisation dans le domaine biomédical, notamment pour la mise au point de systèmes de libération contrôlée de principes actifs. Dans cette optique, nous nous sommes intéressés à la synthèse de c

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27

Piras, Antioco. "Etude par résonnance magnétique nucléaire haute résolution en solution de la structure des polyesters insaturés." Paris 6, 1988. http://www.theses.fr/1988PA066483.

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Preparation et caracterisation par rmn a haute resolution d'alpha -omega -dihydroxy polyesters insatures modeles par rmn bidimensionnelle: mise en evidence de 3 types de branchements: cours, longs, cycliques. Preparation de polyesters lineaires par synthese en solution ou a partir de diacetates, reactions non adaptables industriellement sans modification des procedes; mise au point d'une technique de dosage de la reaction de saturation des produits industriels et etude des parametres influant sur cette reaction

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28

Nottelet, Benjamin. "SYNTHESE ET CARACTERISATION DE NOUVEAUX POLYESTERS BIODEGRADABLES ET HYDROSOLUBLES A FONCTIONS CATIONIQUES OU AMPHOTERES." Phd thesis, Université Montpellier II - Sciences et Techniques du Languedoc, 2005. http://tel.archives-ouvertes.fr/tel-00110595.

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Il n'existe à l'heure actuelle pratiquement pas de copolymères greffés à fonctions cationiques et/ou amphotères présentant une dégradabilité intrinsèque. L'objectif de cette thèse est de générer des composés répondant à ces critères à partir d'une méthode de modification chimique par voie anionique de poly(e-caprolactone) (PCL). A cette fin, deux stratégies principales ont été suivies à partir d'un même intermédiaire réactionnel, un macropolycarbanion dérivé de PCL. La première est fondée sur l'emploi du macropolycabanion en tant qu'agent nucléophile qui réagit avec de petites molécules organi

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29

POVEDA, PATRICIA N. S. "Estudo do efeito de nanopartículas de carbonato de cálcio, dióxido de titânio e óxido de zinco nas propriedades dos termoplásticos polietileno de baixa densidade linear e copoliéster alifático aromático, submetidos à radiação ultravioleta." reponame:Repositório Institucional do IPEN, 2015. http://repositorio.ipen.br:8080/xmlui/handle/123456789/23888.

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Submitted by Claudinei Pracidelli (cpracide@ipen.br) on 2015-08-07T14:31:04Z No. of bitstreams: 0<br>Made available in DSpace on 2015-08-07T14:31:04Z (GMT). No. of bitstreams: 0<br>Tese (Doutorado em Tecnologia Nuclear)<br>IPEN/T<br>Instituto de Pesquisas Energeticas e Nucleares - IPEN-CNEN/SP

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30

Poojari, Yadagiri. "Enzyme Immobilization and Biocatalysis of Polysiloxanes." University of Cincinnati / OhioLINK, 2010. http://rave.ohiolink.edu/etdc/view?acc_num=ucin1265987790.

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31

Zhang, Bin. "Synthesis and Characterization of trans-1,4-Cyclohexylene Ring Containing Poly(arylene ether sulfone)s." Diss., Virginia Tech, 2012. http://hdl.handle.net/10919/26042.

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Poly(arylene ether sulfone)s (PAES) are important commercial polymers and have been extensively studied due to their excellent thermal and mechanical properties. However, some applications are still limited when good solvent resistance and low thermal expansion coefficient are required. There has been a continuous interest in developing new PAES based on new monomers or polymer modifications to obtain new properties or to enhance existing properties. In this dissertation, the synthesis, characterization and structure-property relationship of new 1,4-cyclohexylene ring containing PAESs were com

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32

Lemechko, Pierre, and Pierre Lemechko. "Élaboration de nouveaux biopolyesters bactériens fonctionnalisés pour des applications dans le domaine biomédical." Phd thesis, Université Paris-Est, 2012. http://tel.archives-ouvertes.fr/tel-00804382.

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Les poly(3-hydroxyalcanoate)s ou PHAs sont des biopolyesters linéaires biodégradables et biocompatibles synthétisés par des microorganismes bactériens en tant que réserve de carbone et d'énergie. Ils sont synthétisés par des bactéries à partir de ressources renouvelables et la diversité de leurs structures possibles se traduit par un large éventail de polymères ayant des propriétés mécaniques très différentes. Nous avons tout d'abord testé les capacités de production de PHAs de nouvelles souches bactériennes marines provenant de tapis microbiens de Polynésie française, en utilisant, entre autr

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33

Lü, Runsheng. "Die Entwicklung vernetzbarer Polyolefinblends und deren Verarbeitung zu schmelzgesponnenen Elastomerfasern." Aachen : Shaker, 2003. http://deposit.d-nb.de/cgi-bin/dokserv?idn=968388639.

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34

Horng, Chung Hsien, and 洪忠賢. "synthesis of diblock polyolefin and polyester copolymer via hafnium and stannous octoate catalysts." Thesis, 1996. http://ndltd.ncl.edu.tw/handle/46231197946365441212.

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碩士<br>中原大學<br>化學學系<br>84<br>The atactic polymers and oligomers of 4-methyl-1-pentene were synthesized by using Metallocene/MAO catalyst.1H and 13C NMR analysis of the oligmers show these products containing unsatur- ated chain end which contain vinylene,vinyl,and vinylidene. The oligomers can be transformed to functionalized polyolefins with various functional groups, such as -BR2, -OH, and -OSi(CH3)3. The reaction kinetics of Cp2HFCl2/MAO is observed at different temperatuer. A new block c

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35

KUEI, CHIU SHENG, and 邱聖貴. "Volume Shrinkage and Internal Pigmentability for Low-Shrink Umsaturated Polyester Resins:Effect of Saturated Polyester-Based and Vinyl Acetate-Based Block Copolymer Types of Low-Profile." Thesis, 2002. http://ndltd.ncl.edu.tw/handle/32560096895242351417.

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碩士<br>國立臺灣科技大學<br>化學工程系<br>90<br>Abstract The effects of five series of low-profile additives(LPA)，including(i) reactive vinyl acetate/methyl methacrylate block copolymer (VAc-b-MMA),(ii) saturated polyester， on the volume shrinkage characteristics and internal pigmentability for the low-shrinkage unsaturated polyester resin(UP) after the cure at 30℃ were investigated. The reactive LPAs were synthesized by suspension polymerizations using polymeric peroxides(PPO) as initiator.These LPAs are reactive since there are peroxide linkages in their backbones，which are capable of thermal

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36

Chuan-ter, Yan, and 顏傳特. "The Effect of Nanoparticles of Polysilicic Acid on the Properties of N,N-dimethyacrylamide/Polyester cross-linked copolymer." Thesis, 2000. http://ndltd.ncl.edu.tw/handle/91358442576281411611.

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碩士<br>國立臺灣科技大學<br>纖維及高分子工程研究所<br>88<br>英文摘要 The nanoparticle of polysilicic acid (PSA) was prepared by the hydrolysis and condensation of tetraethoxysilane (TEOS) under the influence of the amide group of N,N-dimethylacrylamide (NDMA). The PSA was then mixed thoroughly with unsaturated polyester (UP) and NDMA, and the transparent hybrid material, NDMA/UP/PSA , was obtained by the free radical copolymerization of UP with NDMA in the presence of PSA using benzoylperoxide (BPO) and N,N-dimethyl-p-toluidine as initiator and accelerator, respectively. The effect of nanoscale PSA particle

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Li, Chen-Hui, and 李政輝. "Volume Shrinkage and Internal Pigmentability Properties for Styrene/Unsaturated Polyester/Low-Profile Additive Systems:Effects of Reactive Vinyl Acetate-Based Block Copolymer and Non-Reactive Saturated Polyester Types of Low-Profile Additives." Thesis, 2001. http://ndltd.ncl.edu.tw/handle/49030915436812473729.

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碩士<br>國立臺灣科技大學<br>化學工程系<br>89<br>Abstract The effect of three series (i)methyl methacrylate/vinyl acetate block copolymer,(ii)vinyl acetate/styrene block copolymer,(iii)saturated polyester low profile additives and vinyl chloride-vinyl acetate/saturated polyester with different ratio types low profile additives on the volume shrinkage characteristics and internal pigmentability for the low-shrinkage unsaturated polyester resin(UP) after the cure at 110℃ were investigated.The experimental results have been explained by phase characteristic of the ST/UP/LPA system,cured sample morphol

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LAI, DUEN-HUNG, and 賴惇弘. "Glass Transition Temperatures and Mechanical Properties for Styrene/ Unsaturated Polyester / Low-Profile Additive Systems:Effects of Reactive Vinyl Acetate-Based Block Copolymer and Non-Reactive Saturated Polyester Types of Low-Profile Additives." Thesis, 2001. http://ndltd.ncl.edu.tw/handle/09606238082627870562.

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碩士<br>國立臺灣科技大學<br>化學工程系<br>89<br>Abstract The effects of reactive vinyl acetate-based block copolymer and non-reactive saturated polyester types of low-profile additives，on the glass transition temperatures and mechanical properties for styrene/unsaturated polyester /low-profile additive ternary systems 。 The reaction kinetics during the cure at 110℃ and the cured sample morphology for the low-shrink unsaturated polyester resins were also studied by using a differential scanning calorimeter(DSC) and scanning electron microscopy(SEM) respectively。The phase separation chara

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楊善宇. "Mechanical properties and glass transition temperatures for styrene/unsaturated polyester/low-profile additive ternary systems:effects of methyl methacrylate-based block copolymer and vinyl acetate-based block copolymer types of low-profile additives." Thesis, 2000. http://ndltd.ncl.edu.tw/handle/55193402901731983748.

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碩士<br>國立臺灣科技大學<br>化學工程系<br>88<br>The effect of four series low profile additives(LPA), included (i) poly(vinyl acetate)-based random copolymer (ii) methyl methacrylate / ethyl acrylate / butyl acrylate-based random copolymer (iii) methyl methacrylate block copolymer (iv) vinyl acetate / styrene block copolymer, on the miscibility of styrene(ST) / unsaturated polyester(UP) / LPA ternary system prior to reaction were investigated. The cured sample morpholoy at 110℃ for the low-shrink unsaturated polyester resins were studied by using scanning electron microscopy(SEM). We will discuss the effect

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彭俊昇. "Synthesis of Vinyl Acetate-Based Block Copolymer Type of Low-Profile Additives and Study of Curing Behavior of Styrene/Unsaturated Polyester/Low-Profile Additive Ternary Systems." Thesis, 2000. http://ndltd.ncl.edu.tw/handle/49840679484463615777.

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碩士<br>國立臺灣科技大學<br>化學工程系<br>88<br>Synthesis of vinyl acetate-based block copolymer types of low profile additives (LPA), and effects of chemical composition of the LPA on the miscibility of styrene (ST)/unsaturated polyester (UP) resin/LPA ternary systems at room temperature prior to reaction were investigated. The phase separation characteristics of ST/UP/LPA systems during the cure, as revealed by the cured sample morphology, could be generally accounted for by the calculated polarity difference per unit volume between UP and LPA on the basis of group contribution methods. The reaction kineti

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洪侑毅. "Shrinking Characteristics, Internal Pigment-Ability and Mechanical Properties of Low-Shrink Unsaturated Polyester Resins : Effect of the Structure and Molecular Weight of Vinvl Chloride - Vinyl Acetate Copolymer Based Low Profile Additives." Thesis, 1998. http://ndltd.ncl.edu.tw/handle/51852722157292324063.

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碩士<br>國立臺灣科技大學<br>化學工程技術研究所<br>86<br>The effects of five vinyl chloride-vinyl acetate copolymerbased low profile additives (LPA)with defferent chemical structrue and molecular weight, including poly(vinyl actetate)(PVAc),poly(vinyl chloride-co-vinyl acetate)(VC-VAc) and poly (vinyl chloride-co-vinyl acetate-co -maleic anhydride)(VC-VAc-MA),on the volume shrinkage characteristics,internal pigmentability and mechanical properties for three low-shrink unsaturated polyester resin (UP)based on maleic anhydride(MA)-propyleneglycol(PG),MA-PG-PA(phthalic anhydride),and MA-PG-IPA(isophghalic acid)type

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李淑琴. "Miscibility and Curing Behavior off Styrene/Unsaturated Polyester/Low Profile Additive Ternary Sysem : Effect fo the Chemical Composition aand Molecurlar Weight of Vinyl chloride-Vinyl acetate Copolymer-based Low Profile Additives." Thesis, 1998. http://ndltd.ncl.edu.tw/handle/19426994637323855637.

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碩士<br>國立臺灣科技大學<br>化學工程技術研究所<br>86<br>The effects of chemical structure and molecular weight of vinyl chloride (vc)-modified poly (vinyl acetate) ( PVAc) low profile additives (LPA) on the miscibility of styrene (ST)/unsaturated polyester (UP) resin/LPA ternary systems prior to reaction were investigated. The reaction kinetics during the cure at 110 c and the cured sample morphology were also studied by DSC, FTIR, and SEM. The phase separation characteristics of ST/UP/LPA systems during the cure, as revelaed by the cured sample morphology and the DSC reaction rate profile, could be generally a

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曹瑋玲. "Synthesis and Self-assembly of Degradable Polyester-containing Block Copolymers." Thesis, 2010. http://ndltd.ncl.edu.tw/handle/62176318323623037034.

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Chang, Yu-Ming, and 張裕明. "Synthesis of Block Copolymers of Polyether Sulfone and quid Crystalline Polyesters." Thesis, 1993. http://ndltd.ncl.edu.tw/handle/94513694780484389500.

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碩士<br>國立交通大學<br>應用化學系<br>81<br>The goal of this study is to present the synthesis and characterization of two series of block copolymers made from polycondensation of telechelic polyether sulfone(PSF-2OH) and liquid crystalline monomers for the application of the molecular composite.The polyether sulfone telechelic was prepared by condensation of excess bisphenol-A and 4,4''-dichlorodiphenyl sulfone in DMSO. The synthesized PSF-2OH was allowed to copolymerized with a mixture of 4-hydroxyben

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Chanda, Sananda. "Itaconate-based Periodically Grafted Polyesters." Thesis, 2016. http://etd.iisc.ernet.in/handle/2005/2854.

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Block copolymers can self-assemble into a variety of periodic nanostructures and therefore, are promising candidates for a diverse range of applications. While self-assembly of block copolymers has been widely studied and exploited, graft copolymers have remained far less explored in this context. One of the primary reasons for this is that the most commonly used methods to prepare graft copolymers leads to polymers that do not have precisely defined structures; specifically, controlling the precise location of the grafted segments is a synthetically difficult challenge. In typical chain poly

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WANG, MING-REN, and 王明仁. "Synthesis and characeterization of blook copolymers of poly (2,6-dimethylphenylene oxide) with liquid crystalline polyester." Thesis, 1990. http://ndltd.ncl.edu.tw/handle/70953675766172496366.

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Chi, Chih-Wei, and 紀志偉. "Studies of Morphological Observations and Crystallization Mechanisms for Polyether-Polyester Segmented Block Copolymers with Amide Linkages." Thesis, 2000. http://ndltd.ncl.edu.tw/handle/16314076751976265355.

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碩士<br>國立中興大學<br>化學工程學系<br>88<br>Complicated crystallization and melting behavior has been observed in a series of polyether-polyester segmented block copolymers. The molecular weight of polyether segment is ca. 2000 g/mol. At polyether content below 40 wt %, polyether segment (i.e., soft segment) is non-crystallizable due to the blocking effect of crystallizable polyester segment (hard segment). The polyester component crystallizes as a typical spherulitic morphology with negative birefringence and linear boundary. We found that the inflection point method to determine glass transition tempera

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李昱嶙. "The study of thermosensitive mPEG-polyester hydrogels: Synthesis and characteristic of diblock copolymers with different composition of ester monomers on hydrogel system." Thesis, 2011. http://ndltd.ncl.edu.tw/handle/29620137394552714637.

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碩士<br>國立清華大學<br>奈米工程與微系統研究所<br>99<br>The objective of this study is to discuss the thermo responsiveness properties of methoxy poly(ethylene glycol)-polyesters (mPEG-PLGA, mPEG-PCLA) diblock copolymers. Without changing the hydrophilic/hydrophobic segment ratio of the copolymer, the molar ratio of ester monomers was adjusted to obtain better formulation for a thermal-sensitive hydrogel. Diblock copolymers were synthesized using ring-opening polymerization. For the mPEG-PLGA series, L10, L8G2, L6G4, L4G6, L2G8, and G10 were prepared corresponding to LA/GA ratios of 100/0, 80/20, 60/40, 20/80, a

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Lee, Li-Ting, and 李立鼎. "Analyses of Miscibility and Interactions in Blends of Poly(4-vinyl phenol) with Aryl Polyesters or Block Copolymers of Amphiphilic Segments." Thesis, 2006. http://ndltd.ncl.edu.tw/handle/57801286506886407872.

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博士<br>國立成功大學<br>化學工程學系碩博士班<br>94<br>Abstract The miscibility and interactions in blends of poly(4-vinyl phenol) (PVPh) with aryl polyesters or amphiphilic block copolymers were investigated in this study. A new miscible blend of PVPh and poly(trimethylene terephthalate) (PTT) is reported. The blends exhibit a single composition-dependent glass transition temperature and homogeneous phase morphology. The Flory-Huggins interaction parameter (c12) and the interaction energy density (B12) obtained by analyzing the melting point depression are of negative values (c12= -0.74 and B=12 -7.76 cal c

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Cernadas, Maria Teresa Cruz Móia. "Desenvolvimento de adesivos cirúrgicos foto-reticuláveis." Master's thesis, 2017. http://hdl.handle.net/10316/83018.

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Dissertação de Mestrado Integrado em Engenharia Química apresentada à Faculdade de Ciências e Tecnologia<br>Os adesivos cirúrgicos têm vindo a ser objeto de estudo ao longo dos anos, surgindo como uma alternativa a métodos mais tradicionais de tratamento e regeneração de tecidos biológicos. O desenvolvimento destes materiais constitui uma boa aposta em práticas cirúrgicas devido às inúmeras vantagens que apresentam, refletindo-se principalmente numa melhoria da qualidade de vida do paciente. De entre as principais características que tornam os bioadesivos tão atrativos, destaca-se a redução do

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